private Expression GetInnerSource(OeSelectItem navigationItem, ExpandedNavigationSelectItem item) { Type clrEntityType = _visitor.EdmModel.GetClrType(navigationItem.EdmProperty.DeclaringType); PropertyInfo navigationClrProperty = OeEdmClrHelper.GetPropertyIgnoreCase(clrEntityType, navigationItem.EdmProperty); Type itemType = OeExpressionHelper.GetCollectionItemType(navigationClrProperty.PropertyType); if (itemType == null) { itemType = navigationClrProperty.PropertyType; } var visitor = new OeQueryNodeVisitor(_visitor, Expression.Parameter(itemType)); var expressionBuilder = new OeExpressionBuilder(_joinBuilder, visitor); Expression innerSource = Expression.Constant(null, typeof(IEnumerable <>).MakeGenericType(itemType)); innerSource = expressionBuilder.ApplyFilter(innerSource, item.FilterOption); if (item.SkipOption != null || item.TopOption != null) { Expression source = Expression.Constant(null, typeof(IEnumerable <>).MakeGenericType(navigationClrProperty.DeclaringType)); innerSource = OeCrossApplyBuilder.Build(source, innerSource, item, navigationItem.Path, expressionBuilder); } return(innerSource); }
private Expression GetInnerSource(OeSelectItem navigationItem, ExpandedNavigationSelectItem item) { Type clrEntityType = _visitor.EdmModel.GetClrType(navigationItem.EdmProperty.DeclaringType); PropertyInfo navigationClrProperty = clrEntityType.GetPropertyIgnoreCase(navigationItem.EdmProperty); Type itemType = OeExpressionHelper.GetCollectionItemType(navigationClrProperty.PropertyType); if (itemType == null) { itemType = navigationClrProperty.PropertyType; } var visitor = new OeQueryNodeVisitor(_visitor, Expression.Parameter(itemType)); var expressionBuilder = new OeExpressionBuilder(_joinBuilder, visitor); var navigationEdmProperty = (IEdmNavigationProperty)navigationItem.EdmProperty; if (navigationEdmProperty.ContainsTarget) { ModelBuilder.ManyToManyJoinDescription joinDescription = _visitor.EdmModel.GetManyToManyJoinDescription(navigationEdmProperty); navigationEdmProperty = joinDescription.TargetNavigationProperty; } IEdmEntitySet innerEntitySet = OeEdmClrHelper.GetEntitySet(_visitor.EdmModel, navigationEdmProperty); Expression innerSource = OeEnumerableStub.CreateEnumerableStubExpression(itemType, innerEntitySet); innerSource = expressionBuilder.ApplyFilter(innerSource, item.FilterOption); if (item.SkipOption != null || item.TopOption != null) { Expression source = OeEnumerableStub.CreateEnumerableStubExpression(navigationClrProperty.DeclaringType, (IEdmEntitySet)_navigationItem.EntitySet); innerSource = OeCrossApplyBuilder.Build(source, innerSource, item, navigationItem.Path, expressionBuilder); } return(innerSource); }
private Expression GetInnerSource(OeNavigationSelectItem navigationItem) { if (navigationItem.Parent == null) { throw new InvalidOperationException("Inner source cannot exist for root item"); } Type clrEntityType = _edmModel.GetClrType(navigationItem.EdmProperty.DeclaringType); PropertyInfo navigationClrProperty = clrEntityType.GetPropertyIgnoreCase(navigationItem.EdmProperty); Type itemType = OeExpressionHelper.GetCollectionItemTypeOrNull(navigationClrProperty.PropertyType) ?? navigationClrProperty.PropertyType; var visitor = new OeQueryNodeVisitor(_joinBuilder.Visitor, Expression.Parameter(itemType)); var expressionBuilder = new OeExpressionBuilder(_joinBuilder, visitor); IEdmNavigationProperty navigationProperty = navigationItem.EdmProperty; if (navigationItem.EdmProperty.ContainsTarget) { ModelBuilder.ManyToManyJoinDescription joinDescription = _edmModel.GetManyToManyJoinDescription(navigationProperty); navigationProperty = joinDescription.TargetNavigationProperty; } IEdmEntitySet innerEntitySet = OeEdmClrHelper.GetEntitySet(_edmModel, navigationProperty); Expression innerSource = OeEnumerableStub.CreateEnumerableStubExpression(itemType, innerEntitySet); ExpandedNavigationSelectItem item = navigationItem.NavigationSelectItem; innerSource = expressionBuilder.ApplyFilter(innerSource, item.FilterOption); long?top = GetTop(navigationItem, item.TopOption); if (top == null && item.SkipOption == null) { return(innerSource); } OrderByClause orderByClause = item.OrderByOption; if (navigationItem.PageSize > 0) { orderByClause = OeSkipTokenParser.GetUniqueOrderBy(navigationItem.EntitySet, item.OrderByOption, null); } var entitySet = (IEdmEntitySet)navigationItem.Parent.EntitySet; Expression source = OeEnumerableStub.CreateEnumerableStubExpression(navigationClrProperty.DeclaringType, entitySet); var crossApplyBuilder = new OeCrossApplyBuilder(_edmModel, expressionBuilder); return(crossApplyBuilder.Build(source, innerSource, navigationItem.Path, orderByClause, item.SkipOption, top)); }